Microbiology MCQs

Page No. 28

The distinguishing characteristic of a positive delayed type hypersensitivity skin test is______________?


aErythema

✓


bNecrosis

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c Induration

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dVasculitis

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View Answer Erythema

IgG antibodies have a half-life of approximately_______________?


a 1 hour

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b1 day

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c1 week

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d1 Month

✓


View Answer 1 Month

Human immunoglobulins are divided based on_____________?


aFunctional differences

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b Structural differences

✓


cComplemented fixation

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dNone of the above

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Toxoids are_________________?


aantigenic and toxic

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bantigenic and non-toxic

✓


cnon-antigenic and toxic

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dnon-antigenic and non-toxic

✖



IgG has subclasses_______________?


a1

✖


b2

✖


c3

✖


d4

✓


View Answer 4

Adjuvant given along with antigens are going to________________?


aIncrease toxigenicity

✓


bIncrease antigenicity

✖


cReduce the antigenicity

✖


dreduce the toxigenicity

✖


View Answer Increase antigenicity

Following reaction are produced by heterophil antigens except_____________?


aForssman antigen antibody reaction

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b Weil-Felix reaction

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cPaul bunnel reaction

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dWidal reaction

✓


View Answer Widal reaction

Characters of exotoxin include all, except_______________?


aProtein polysaccharide complex

✓


bHeat labile

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cHighly poten

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dHas specific tissue affinity

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Anaerobic bacteria can be cultured in__________________?


aL-J medium

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bRobertson cooked meat medium

✓


cLoefflers medium

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dSabourauds agar

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Louis Pasteur is not associated with_______________?


aIntroduction of complex media

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bDiscovery of Rabies Vaccine

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cDiscovery of M. Tuberculosis

✓


dDisproved spontaneous regression theory

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